gcc: make incompatible-pointer-types as warning

gcc 14 changed `incompatible-pointer-types` from warning to error
for now, make it as warning to avoid build failure

Makefile.pre.in

@@ -827,10 +827,10 @@ $(BUILDPYTHON):	Programs/python.o $(LINK_PYTHON_DEPS) python_exe.o
 	$(LINKCC) $(PY_CORE_LDFLAGS) $(LINKFORSHARED) -municode -o $@ Programs/python.o $(LINK_PYTHON_OBJS) $(LIBS) $(MODLIBS) $(SYSLIBS) python_exe.o
 
 $(BUILDVENVLAUNCHER): $(BUILDPYTHON) venvlauncher.o  $(srcdir)/PC/launcher.c
-	$(LINKCC) -D_CONSOLE -DVENV_REDIRECT -DPYTHON_EXECUTABLE_WITH_VERSION="L\"python$(LDVERSION)$(EXE)\"" -municode -static -static-libgcc -static-libstdc++ venvlauncher.o $(srcdir)/PC/launcher.c -o $@ -lversion
+	$(LINKCC) -D_CONSOLE -DVENV_REDIRECT -DPYTHON_EXECUTABLE_WITH_VERSION="L\"python$(LDVERSION)$(EXE)\"" -Wno-error=incompatible-pointer-types -municode -static -static-libgcc -static-libstdc++ venvlauncher.o $(srcdir)/PC/launcher.c -o $@ -lversion
 
 $(BUILDVENVWLAUNCHER): $(BUILDPYTHONW) venvwlauncher.o  $(srcdir)/PC/launcher.c
-	$(LINKCC) -D_WINDOWS -DVENV_REDIRECT -DPYTHON_EXECUTABLE_WITH_VERSION="L\"pythonw$(LDVERSION)$(EXE)\"" -mwindows -municode -static -static-libgcc -static-libstdc++ venvwlauncher.o $(srcdir)/PC/launcher.c -o $@ -lversion
+	$(LINKCC) -D_WINDOWS -DVENV_REDIRECT -DPYTHON_EXECUTABLE_WITH_VERSION="L\"pythonw$(LDVERSION)$(EXE)\"" -Wno-error=incompatible-pointer-types -mwindows -municode -static -static-libgcc -static-libstdc++ venvwlauncher.o $(srcdir)/PC/launcher.c -o $@ -lversion
 
 platform: $(PYTHON_FOR_BUILD_DEPS) pybuilddir.txt
 	$(RUNSHARED) $(PYTHON_FOR_BUILD) -c 'import sys ; from sysconfig import get_platform ; print("%s-%d.%d" % (get_platform(), *sys.version_info[:2]))' >platform

configure.ac

@@ -2504,6 +2504,14 @@ case $GCC in
 yes)
     CFLAGS_NODIST="$CFLAGS_NODIST -std=c11"
 
+    # GCC 14 and later error out with incompatible-pointer-types
+    # this only occues on mingw
+    case $host in
+    *-*-mingw*)
+        CFLAGS_NODIST="$CFLAGS_NODIST -Wno-error=incompatible-pointer-types"
+      ;;
+    esac
+
     PY_CHECK_CC_WARNING([enable], [extra], [if we can add -Wextra])
     AS_VAR_IF([ac_cv_enable_extra_warning], [yes],
               [CFLAGS_NODIST="$CFLAGS_NODIST -Wextra"])